p2p: add p2p regex for tethering modes

Bug: 137602441
Test: CtsVerifier - Wi-Fi Direct
Change-Id: I6d6d29bd1742e4f34d09a208fefdddc9913e38a2

overlay/frameworks/base/core/res/res/values/config.xml

diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index d4d8f55..030833a 100755
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -101,6 +101,13 @@
     </string-array>
 
     <!-- List of regexpressions describing the interface (if any) that represent tetherable
+         Wifi P2P interfaces.  If the device doesn't want to support tethering over Wifi P2p this
+         should be empty.  An example would be "p2p-p2p.*" -->
+    <string-array translatable="false" name="config_tether_wifi_p2p_regexs">
+        <item>"p2p-p2p\\d-.*"</item>
+    </string-array>
+
+    <!-- List of regexpressions describing the interface (if any) that represent tetherable
          bluetooth interfaces.  If the device doesn't want to support tethering over bluetooth this
          should be empty. -->
     <string-array translatable="false" name="config_tether_bluetooth_regexs">